EPUB Accessibility Techniques

The EPUB Accessibility Techniques are advisory, intended to help Authors create EPUB Publications that conform to the [EPUB Accessibility] requirements. They are not applicable in all situations

These techniques do not address issues in digital publishing for which there are no universally accessible solutions.

The W3C’s Digital Publishing Interest Group has published a note that outlines many of these issues [W3C Accessibility Note]. As solutions become available, they will be incorporated.

Authors are encouraged to report issues to the appropriate community for guidance on how to meet accessibility standards. The W3C Web Accessibility Interest Group has a public mailing list where issues meeting [WCAG 2.0] and [WAI-ARIA 1.1] requirements can be raised.

Take a look at the EPUB Accessibility Techniques. The IDPF has an accessibility forum that may also assist you in finding answers to your questions.